

396 

WWUS20 KWNS 140224

SEL6

SPC WW 140224

TXZ000-140900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 276

NWS STORM PREDICTION CENTER NORMAN OK

925 PM CDT SUN MAY 13 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST TEXAS



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 925 PM UNTIL

400 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES WEST

NORTHWEST OF WINK TEXAS TO 35 MILES SOUTH OF FORT STOCKTON TEXAS.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 275...



DISCUSSION...BAND OF STRONG/SEVERE STORMS IS MOVING SEWD FROM

EXTREME SERN NM TOWARD SW TX...IN ADVANCE OF A WELL-DEFINED SHORT

WAVE TROUGH MOVING SEWD TOWARD THE SRN ROCKIES.  AN AXIS OF STRONGER

WNWLY MID/UPPER LEVEL WINDS EXTENDS FROM SWRN NM INTO FAR SWRN

TX...PROVIDING ENHANCED LARGE SCALE ASCENT WITHIN THE LEFT EXIT

REGION OF THE UPPER JET.  EASTERLY LOW LEVEL WINDS EVIDENT ON MAF

RAOB AND VAD VEER SHARPLY WITH HEIGHT RESULTING IN FAVORABLE SHEAR

TO MAINTAIN ORGANIZED CONVECTIVE STRUCTURES INCLUDING SHORT BOWING

LINE SEGMENTS. THREAT FOR DAMAGING WINDS AND LARGE HAIL IS LIKELY TO

PERSIST INTO THE OVERNIGHT HOURS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 30025.





...WEISS

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